BESTEK Voltage Converter 220v to 110v, Travel Adapter Converter, Step Down, Travel Adapter Converter Combo 4.2A Dual Smart USB UK/AU/US/EU Worldwide Plug

Used this on a 3 week trip to Peru. I tested it at home first on 110v and it worked great, then it did exactly what it was supposed to in Peru. I don’t like the design of others that has removable adapter prongs, as it is more to lose. This has them built in for different plug types which was practical in Peru with 2 different plugs found throughout the country, and it was a mis of 110v and 220v depending on the places we were staying.

BESTEK Voltage Converter worked well for us on our recent visit to St. Kitts. We charged our power banks with it and used those to charge our phones. Out of an abundance of caution, we did not charge our phones directly. This voltage converter had all the built-in adapters we needed to plug it into the outlets. It is compact and easily carried in our carry-on back packs.

Bought this because my toothbrush charger and beard trimmer are not dual voltage, plus I liked the two USB ports so I could charge multiple devices simultaneously. It works ok with a few caveats- 2 iPhones can charge on the USB ports, but not an iPhone and iPad, the unit will balk, though you can charge 2 iPhones and an iPad if you plug the iPad charger into the electrical outlet, which has the bulk of the capacity. I used the European plugs and find them workable, but the unit does not sit squarely in those recessed outlets, it can fall out if you are not careful, and using it on trains you will have to keep an eye on it as it tends to fall out of the outlet from vibration. One other thing- I tried it on 110v at home and it worked, but when I got to Europe I thought it went bad as it was not lighting up. Turns out it has to analyze the voltage and change its input setting, takes about 5 minutes and only one time. All in all a usable unit, and I like that is a true converter that put out a clean sine wave. Keeping it despite the issues now that I know its “personality.”

UPDATE TO REVIEW: Contacted by Bestek shortly after review and was offered a full refund or replacement with a different device. By the time we returned from our trip, the return option to Amazon had expired. Chose a full refund in this case (just requested as of this writing, so have not received as yet). Based on their customer service and prompt responses to our concerns, we will attempt to use their products again, should we find one that fits our needs at the time of travel. Big thank you for their customer service!Doesn't work in the UK since it's so big when plugged into the outlets it turns the outlet switch off. Definitely not safe. Gets hot to the touch and makes a horrible noise that changes in pitch randomly. If you plug more then one device into it, it cycles on and off and screams like a bag full of bees. Absolute crap. Just need it to spit out enough 5V USB current to charge two iPhones and it fails like worts on worms. Will try to return for refund when home. Waste of my limited carry on luggage space....

Instructions were not the best. It was not clear that the third pin was plastic

I am super happy with this unit. This is not just a plug converter, but a true voltage/ frequency converter. It is being used in the UK 240/ 50Hz and correctly converts to 120/ 60 Hz. The USB A ports are handy for charging. Two thumbs up!!

I didn't feel like this thing was going to break on me which is a big deal! Other ones I've bought have broken during trips and this one feels sturdier. The plug fits securely in (the American plug, the UK plug, and the USB - haven't tried the others). Really good!

Bought this for a trip to the UK that was postponed and I didn't try the device out until I made the trip this week. Device hasn't work at all. Shame as I like the size and layout. Having to try and find something local.

Lo tuvimos que regresar. Lo compramos para un viaje a Perú pero al momento de conectarlo hacía un ruido muy fuerte, como una especie de ventilador y los celulares nunca se cargaron.Tuvimos que comprar otro directamente en Perú que sí funcionó.

Solo conectalo y listo. En cuanto a usarlo en el avion no lo recomiendo, es pesado y con cualquier movimiento brusco se caerá.